Deed james jones



(No Mod-e1.) l

J. 8u A. J. JONES'. GRINDING MILL.

,219. Patented Feb. 10, 189,1.

UNITED' STATES ATENT OFFICE.

JAMES JONES AND ALDRED JAMES JONES, OF THOROLD, (CANADA.

GRlNDlNG-IVIILL..

SPECIFICATION forming part of Letters Patent No. 446,219, dated February 10, 1891. Application filed June 5, 1890. 'Serial No. 354,378. (No model.)

.To all whom, it may concern:

Be it known that we, JAMES JONES and AL- DRED JAMES J ONES, both millers, and both of the town of Thorold, in the county ofIVelland, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Grinding-Mills, of which the following is a specification.

Our invention relates to improvements in grinding-mills patented to us February 25, 1890, under No. 422,223; and the object of the present invention is, first, to design a stationy finer grade than when produced by a revolving roll with a surface following the'periphery of the roll, and it is with the object of providing a series of iiat corrugated surfaces, which may be readily substituted one for the other and adj usted each vertically when a portion of the surface is Worn out, that our invention is chiefly designed.

In the drawing like letters of reference in* dicate corresponding parts.

A is the stationary roll7 the periphery of which is divided into a series of fiat surfaces a, which extend longitudinally from end to end ofthe roll, each surface a being corrugated, as shown. The roll A is held in the bearing-boxes B, which are vertically adjustable in the frames O by the screw-spindles D, which support the bearing-boxes B, and are operated by the hand-wheels E. The bearing-boxes B are grooved, as shown, to receive the inner ribs b in the frames O. These ribs are fixed to the inner faces ot' the vertical sides of the frames.

c out in their bases through which the setscrews CZ pass in order to provide a ready means of adjustment to suit the class of work intended to be passed through the rolls.

The frames O have slots F is the revolving roll which is held in the bearing-boxes G, which are adjusted to and from the stationary roll by the screw-spindles H in the same manner as described in our former patent hereinbefore referred to. y

It will be seen that as the bearing-boxes B are raised or lowered a different portion of one of the dat corrugated grinding-surfaces a is contiguous to the revolving roll F. Consequently, if the stationary rollAis set so that the revolving roll F operates on the Lipper portion of the surface A next to it and that portion of the surface becomes Worn, the roll A may be adj usted by the screw-spindles D so that another portion of the surface is contiguous tothe revolving` roll so as to operate upon the Work, and so on till the Whole of the surface a is Worn out, when the caps of the bearing-boxes B may be loosened and the roll turned suiciently to bring into play another of the series of flat grinding-surfaces a.

Although We show the revolving roll with longitudinal ratchet-shaped furrows, it will be understood of course that We may use a revolving roll of any desired surface to operate with our stationary roll.

That We claim as our invention is 1. In combination, the revolving grindingroll, the stationary rollhaving a series of flat grinding-faces, means for adjustably holding the stationary roll so that it may be adjusted on its axis to present different grinding-faces to the grinding-roll, the said rollsbeingadjustable to vary their vertical relation and their distance apart, whereby different faces of the stationary roll maybe brought into action and different parts of the said faces, substantially as described.

2. In combination, the revoluble grindingroll, the stationary roll, the main frame, the open frames C adjustable thereon to and from the revolving roll, and the bearing-boxes B, adj ustable vertically Within the frames C and upon the inner faces of the vertical sides, substantially as described.

JAMES JoNEs. ALDRED JAMES JoNEs. 

